8409457 has 16 divisors (see below), whose sum is σ = 10316160. Its totient is φ = 6694272.

The previous prime is 8409439. The next prime is 8409473. The reversal of 8409457 is 7549048.

It is a cyclic number.

It is not a de Polignac number, because 8409457 - 2¹¹ = 8407409 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8409437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6453 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (644760).

Almost surely, 2^8409457 is an apocalyptic number.

It is an amenable number.

8409457 is a deficient number, since it is larger than the sum of its proper divisors (1906703).

8409457 is a wasteful number, since it uses less digits than its factorization.

8409457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 8409457 is about 2899.9063777991. The cubic root of 8409457 is about 203.3555289456.

The spelling of 8409457 in words is "eight million, four hundred nine thousand, four hundred fifty-seven".